Aquarium One-Way Check Valves

These Plastic One-Way Check Valves provide essential backflow protection for aquarium air and CO₂ systems. Designed to prevent water from flowing back into air pumps, they help protect your equipment from damage. Each valve delivers smooth, consistent airflow for optimal tank aeration. Made from high-quality plastic, they are lightweight yet durable for long-term use. The compact design ensures easy installation into standard airline tubing. Their strong non-return mechanism keeps your air system running safely and efficiently. Suitable for both freshwater and marine aquariums, they offer versatile compatibility. The pack includes ten valves, providing great value for multiple tanks or replacements. These valves help maintain stable tank conditions by ensuring constant airflow. They are an essential accessory for any aquarium setup that uses air pumps or CO₂ systems.